confusion
The word is conversation.
conform is a synonym for reconcile
conquer
consequence
A synonym for liar that starts with "c" is "deceiver."
The prefix in the word "confide" is "con-," which means "with" or "together."
The prefix is con-, meaning together or with.
The word "con" means "with" in English, and the word "sordina" means "mute". So, the phrase con sordina means that the music is to be played "with a mute". This could be a mute on your trumpet, violin, drums, etc. Similar uses of "con": "con anima" means with spirit, "con fuoco" means with fire
I can only think of one stem in the word "concussion" which is "con". Con means together.
Con man
contractCongeal
If "con" appears in a word, it usually means with or together. The word Confused means the inability to put things together, or fuse them.